[Cython] Class scope lookup order

[Vitja Makarov]

2011/8/15 Stefan Behnel <stefan_ml at behnel.de>:
> Stefan Behnel, 15.08.2011 11:34:
>>
>> at least to me, the most surprising thing is this:
>>
>>  >>> A = 1
>>  >>> def foo(x):
>>  ...   A = x
>>  ...   class X:
>>  ...     a = A
>>  ...   return X
>>  ...
>>  >>> foo(2).a
>>  2
>>  >>> def foo(x):
>>  ...   A = x
>>  ...   class X:
>>  ...     A = A
>>  ...   return X
>>  ...
>>  >>> foo(2).A
>>  1
>>
>> That looks pretty sick, but I would guess that the 'reasoning' behind this
>> is that the second case contains an assignment to A inside of the class
>> namespace, and assignments make a variable local to a scope, in this case,
>> the function scope.
>
> Argh, sorry, I interpreted the results the wrong way around. No, I have no
> idea for a serious explanation. Let's see what c.l.py brings up.
>

I've tried emulate this behaviour in cython here:

https://github.com/vitek/cython/commit/26ec702fd93fb6dc2109a501b52130e5f775c793


Actually I think this is made to support assignments like A = A in class scope.

-- 
vitja.